title: Spatial resolution measurements for passive microwave radiometry using a tissue-equivalent phantom.
abstract: A tissue-equivalent "hot" line source phantom is described for assessing spatial resolution in passive microwave radiometry systems. LSFs were measured for two rectangular waveguide antennas connected to a 4.7-GHz radiometer. The normalized LSFs and corresponding modulation transfer functions were found to be independent of line source temperature, but dependent upon antenna size, orientation, and line source depth.
authors.affiliation: Medical Physics Division, Tufts-New England Medical Center, Boston, Massachusetts 02111.
authors.forename: R H
authors.initials: RH
authors.lastname: Behrman
authors.forename: M A
authors.initials: MA
authors.lastname: Brodie
authors.forename: E S
authors.initials: ES
authors.lastname: Sternick
authors.forename: R S
authors.initials: RS
authors.lastname: Grabowy
authors.forename: L A
authors.initials: LA
authors.lastname: Gemmell
authors.forename: K L
authors.initials: KL
authors.lastname: Carr
mesh_terms: D055592:Biophysical Phenomena; D001703:Biophysics; D006801:Humans; D008872:Microwaves; D008961:Models, Structural; D011874:Radiometry / Q000295:instrumentation / Q000379:methods*; D013817:Thermography / Q000295:instrumentation / Q000379:methods*